Sesame diseases / Gingelly diseases

Major Sesame diseases are given below:-

1.Bacterial blightXanthomonas campestris pv. sesami 

  • Plants of all stage are affected.
  • Water soaked, small and irregular spots are formed on the leaves which later increases and turn brown, under favourable conditions.
  • Leaves become dry and brittle, severely infected leaves defoliate.
  • Crop rotation.
  • Use resistant variety like T-58
  • Early planting i.e. immediately after onset of monsoon.
  • Destruction of crop residues.
  • Steep the seed in Agrimycin-100 (250 ppm) or Streptocycline suspension (0.05%) for 30 minutes.
  • Foliar spray of Streptocycline (500 ppm) as soon as symptoms are noticed.
  • Continue two more sprays at 15 days interval if necessary.


2.Cercospora leaf spot / White spot: Cercospora sesami, C. sesamicola

sesame cercospora leaf spot

  • The disease appears as small, angular brown leaf spots of 3 mm diameter with a grey centre and dark margin delimited by veins.
  • In severity of the disease defoliation occurs. Under favourable conditions, the disease spreads to leaf petiole, stem and capsules producing linear dark coloured deep seated lesions.
  • Spray Mancozeb 1000g/ha


3.Damping off / Root Rot: Macrophomina phaseolina

sesame damping off

  • The fungus attacks young seedling, their stem becomes water soaked soft and incapable of supporting the seedling which falls over and dies.
  • On older seedlings elongated brownish black lesions appear which increase in length and width girdling the stem and plant dies.
  • Soil application of P. fluorescens or T. viride – 2.5 Kg / ha + 50 Kg of well decomposed FYM or sand at 30 days after sowing.
  • Spot drench Carbendazim – 1 gm/ litre.


4.Powdery mildewOidium sp., Sphaerotheca fuliginia, Leveillula sp.

sesame powdery mildew

  • Small cottony spots appear on the infected leaves which gradually spread on the lamina.
  • Defoliation of severely infected plant occurs before maturity.
  • Apply any one of the following Sulphur dust 25 kg/ha Wettable sulphur 25 kg/ha


5.Sesamum phyllody: Phytoplasma

Sesamum phyllody

  • All floral parts are transformed into green leafy structures followed by abundant vein clearing in different flower parts.
  • In severe infection, the entire inflorescences is replaced by short twisted leaves closely arranged on a stem with short internodes, abundant abnormal branches bend down.
  • Finally, plants look like a witches broom.
  • If capsules are formed on lower portion of plant they do not yield quality seeds.
  • Transmitted by the vector Orosius albicintus
  • Remove and destroy infected plants.
  • To control vector, spray Monocrotophos 36 or Dimethoate 30 EC 500 ml/ha combined with intercropping of Sesamum + Redgram (6: 1)


6.Root rot: Fusarium oxysporum f.sp.sesami

sesame root rot

  • The plant gets infected at any stage of crop development.
  • Symptoms are first visible on the lower leaves and then it progresses upwards.
  • Yellowing, drooping and desiccation of leaves occur.
  • In a severe case, the entire plant gets defoliated, bends down and ultimately dries up.
  • Vascular bundles turn brown starting from the root and get extended up to tip.
  • Deep ploughing in summer.
  • Follow crop rotation
  • Soil amendment with farm yard manure @ 12.5 tonnes/ha is helpful in reducing the incidence of the disease
  • Destroy the diseased plant debris by burning of burying in the soil.
  • Seed treatment with T. viride @4g/kg or P. fluorescens @ 10g/ kg of seed or Carbendazim or Thiram 2g/kg of seed.
  • Spot drenching with Carbendazim 1g/lit.
  • Soil application of  P. fluorescens / T. viride 2.5 kg/ha with 50 kg FYM.



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